The promise is rooted in the fact that the only way we can endure any ounce of suffering in this life is because Jesus Christ is tending the soil of our lives.
God is still faithful. There are still the covenantal promises. There is still the preservation of the Messianic line because He who promised, He who covenanted, must be faithful.
The Promise Land's true value is in the gift of Jesus who will provide His blood and very life to endow all people with forgiveness and everlasting life for His children.
Nearly two thousand years after Paul scribbled out these lines, the only reason “we” are here, reading Paul’s magnum opus together, is that we are inheritors of the promise Paul sees in the paradox.